22155535368 has 80 divisors (see below), whose sum is σ = 62166109500. Its totient is φ = 7372076544.

The previous prime is 22155535327. The next prime is 22155535373. The reversal of 22155535368 is 86353555122.

22155535368 is a `hidden beast` number, since 2 + 2 + 1 + 55 + 535 + 3 + 68 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21473385444 + 682149924 = 146538^2 + 26118^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 338668 + ... + 398756.

Almost surely, 2^22155535368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22155535368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31083054750).

22155535368 is an abundant number, since it is smaller than the sum of its proper divisors (40010574132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22155535368 is a wasteful number, since it uses less digits than its factorization.

22155535368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60676 (or 60663 counting only the distinct ones).

The product of its digits is 1080000, while the sum is 45.

The spelling of 22155535368 in words is "twenty-two billion, one hundred fifty-five million, five hundred thirty-five thousand, three hundred sixty-eight".